Peer-to-peer confidential document exchange

ABSTRACT

Systems and methods for peer-to-peer secure document exchange are disclosed. The system may allow a document provider to securely transmit a certified document to a document verifier using decentralized storage. The verifier system may generate a session key pair and transmit the session public key to a trusted API provider. The trusted API provider may generate a session nonce. The verifier system may transmit the session nonce to the provider system. The provider system may use the session nonce to retrieve the session public key. The provider system may encrypt a certified document using the session public key and store the encrypted certified document in the decentralized storage. The verifier system may retrieve the encrypted certified document by polling the trusted API provider based on the session nonce. The verifier system may decrypt the encrypted certified document using the session private key.

CROSS-REFERENCE TO RELATED APPLICATIONS

his application is a continuation of copending U.S. patent applicationSer. No. 16/217,654, entitled “PEER-TO-PEER CONFIDENTIAL DOCUMENTEXCHANGE” and filed on Dec. 12, 2018, which is incorporated by referenceas if set forth herein in its entirety.

FIELD

The disclosure generally relates to transmitting documents betweenparties, and more specifically, to systems and methods for peer-to-peersecure document exchange using a decentralized storage.

BACKGROUND

Parties may desire to share documents having sensitive information. Forexample, a first party may share credit reports, driver licenses, socialsecurity numbers, university certificates, and similar confidentialinformation with a second party as part of a job application, a mortgageapplication, a credit inquiry, a credit account (e.g., to establish acredit card), and in similar situations where confidential informationmay be needed to authenticate an individual. Parties may typically sharesensitive documents using a file hosting service or via email, textmessage, or the like. A technical problem is that typical transmissionmethods may be unsecure, and the sensitive information may becompromised by a third party.

SUMMARY

Systems, methods, and articles of manufacture (collectively, the“system”) for peer-to-peer secure document exchange are disclosed. Thesystem may include a provider system and a verifier system. The providersystem may encrypt a certified document using a session public key togenerate a session encrypted certified document. The provider system mayupload the session encrypted certified document to a decentralizedstorage, wherein in response to uploading the session encryptedcertified document the decentralized storage returns a session documentlocator. The provider system may invoke a trusted API provider bypassing a session nonce and the session document locator. In response tobeing invoked the trusted API provider may be configured to store thesession document locator associated with the session nonce. The trustedAPI provider may be configured to receive a polling request comprisingthe session nonce from the verifier system. In response to receiving thepolling request the trusted API provider may be configured to retrievethe session document locator based on the session nonce. In response toretrieving the session document locator, the trusted API provider may beconfigured to retrieve the encrypted certified document by querying thedecentralized storage based on the session document locator.

In various embodiments, the verifier system may be configured to decryptthe encrypted certified document using a session private key associatedwith the session public key. In various embodiments, the provider systemmay receive a secure document exchange URL. The provider system maydownload a provider session runtime services by accessing the securedocument exchange URL. The provider system may transmit the securedocument exchange URL to the verifier system. In response to receivingthe secure document exchange URL the verifier system may be configuredto download a verifier session runtime services by accessing the securedocument exchange URL. The verifier session runtime services may beconfigured to generate the session public key and the session privatekey using an encryption algorithm. The verifier session runtime servicesmay be configured to transmit the session public key to the trusted APIprovider. In response to receiving the session public key the trustedAPI provider may be configured to generate the session nonce. Thetrusted API provider may be configured to return the session nonce tothe verifier system. The provider system may receive the session noncefrom the verifier system, The provider system may invoke the trusted APIprovider by passing the session nonce. In response to being invoked thetrusted API provider may be configured to retrieve the session publickey corresponding to the session nonce. The provider system may receivethe session public key from the trusted API provider. In variousembodiments, the session private key and/or the session nonce comprisesan expiration duration.

In various embodiments, a verifier system may download a verifiersession runtime services by accessing a secure document exchange URL,wherein the secure document exchange URL is received from a providersystem. The verifier system may generate a session public key and thesession private key using an encryption algorithm provided by theverifier session runtime services. The verifier system may transmit thesession public key to a trusted API provider, wherein in response toreceiving the session public key the trusted API provider is configuredto generate a session nonce. The verifier system may receive the sessionnonce from the trusted API provider. The verifier system may transmitthe session nonce to the provider system, In response to receiving thesession nonce the provider system may be configured to invoke thetrusted API provider by passing the session nonce. In response to beinginvoked the trusted API provider may be configured to retrieve thesession public key corresponding to the session nonce. The trusted APIprovider may be configured to return the session public key to theprovider system.

In various embodiments, in response to receiving the session public key,the provider system is configured to encrypt a certified document usingthe session public key to generate a session encrypted certifieddocument. The provider system may be configured to upload the sessionencrypted certified document to a decentralized storage. In response touploading the session encrypted certified document the decentralizedstorage may return a session document locator to the provider system. Inresponse to receiving the session document locator, the provider systemmay be configured to invoke the trusted API provider by passing thesession nonce and the session document locator, In response to beinginvoked the trusted API provider may be configured to store the sessiondocument locator associated with the session nonce. The verifier systemmay poll the trusted API provider by passing the session nonce to thetrusted API provider. In response to receiving the polling request thetrusted API provider may be configured to retrieve the session documentlocator based on the session nonce. In response to retrieving thesession document locator, the trusted API provider may be configured toretrieve the encrypted certified document by querying the decentralizedstorage based on the session document locator. The verifier system mayreceive the encrypted certified document from the trusted API provider.The verifier system may decrypt the encrypted certified document usingthe session private key.

In various embodiments, the provider system may be configured to receivethe secure document exchange URL and download a provider session runtimeservices by accessing the secure document exchange URL. In variousembodiments, the session private key and/or the session nonce comprisesan expiration duration.

The foregoing features and elements may be combined in variouscombinations without exclusivity, unless expressly indicated hereinotherwise. These features and elements as well as the operation of thedisclosed embodiments will become more apparent in light of thefollowing description and accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The subject matter of the present disclosure is particularly pointed outand distinctly claimed in the concluding portion of the specification. Amore complete understanding of the present disclosure, however, may beobtained by referring to the detailed description and claims whenconsidered in connection with the drawing figures, wherein like numeralsdenote like elements.

FIG. 1 is a block diagram illustrating various system components of asystem for peer-to-peer secure document exchange, in accordance withvarious embodiments;

FIG. 2A illustrates an exemplary provider system in a system forpeer-to-peer secure document exchange, in accordance with variousembodiments;

FIG. 2B illustrates an exemplary verifier system in a system forpeer-to-peer secure document exchange, in accordance with variousembodiments:

FIG. 3 illustrates an exemplary process flow for a method ofinitializing a secure document exchange, in accordance with variousembodiments;

FIG. 4 illustrates an exemplary process flow for a method of uploading acertified document during a secure document exchange, in accordance withvarious embodiments; and

FIG. 5 illustrates an exemplary process flow for a method of retrievinga certified document during a secure document exchange, in accordancewith various embodiments.

DETAILED DESCRIPTION

The detailed description of various embodiments herein makes referenceto the accompanying drawings and pictures, which show variousembodiments by way of illustration. While these various embodiments aredescribed in sufficient detail to enable those skilled in the art topractice the disclosure, it should be understood that other embodimentsmay be realized and that logical and mechanical changes may be madewithout departing from the spirit and scope of the disclosure. Thus, thedetailed description herein is presented for purposes of illustrationonly and not of limitation. For example, the steps recited in any of themethod or process descriptions may be executed in any order and are notlimited to the order presented. Moreover, any of the functions or stepsmay be outsourced to or performed by one or more third parties.Modifications, additions, or omissions may be made to the systems,apparatuses, and methods described herein without departing from thescope of the disclosure. For example, the components of the systems andapparatuses may be integrated or separated. Moreover, the operations ofthe systems and apparatuses disclosed herein may be performed by more,fewer, or other components and the methods described may include more,fewer, or other steps. Additionally, steps may be performed in anysuitable order. As used in this document, “each” refers to each memberof a set or each member of a subset of a set. Furthermore, any referenceto singular includes plural embodiments, and any reference to more thanone component may include a singular embodiment. Although specificadvantages have been enumerated herein, various embodiments may includesome, none, or all of the enumerated advantages.

In various embodiments, systems for peer-to-peer secure documentexchange are disclosed. The system may allow a first party (e.g., thedocument provider) to securely exchange documents with a second party(e.g., the document verifier). The parties may interact with a trustedAPI provider to transmit and retrieve data from a decentralized storage,and/or to initialize the secure document exchange. The system mayprovide a technical solution to the technical problem of unsecuredocument exchange by enabling the parties to instantly and securelyshare information over a network that may be unsecure (e.g., theinternet, a public network, etc.), without using typical unsecuremethods of transmission such as email, text message, and the like. Invarious embodiments, the system provides a means for real-time,peer-to-peer secure document exchange without the need to rely on theservices of a third party, such as email service provider, thattypically hosts its systems in its own data centers. The system furtherimproves the functioning of the computer and network. For example, bytransmitting, storing, and accessing data using the processes describedherein, the security of the data is improved, which decreases the riskof the computer or network from being compromised. For example,exchanging data using the systems and methods described herein mayresult in better data privacy while also enabling anonymity of theparties transmitting data.

In various embodiments, and with reference to FIG. 1, a system 100 forpeer-to-peer secure document exchange is disclosed. System 100 mayinclude various computing devices, software modules, networks, and datastructures in communication with one another. System 100 may contemplateuses in association with web services, utility computing, pervasive andindividualized computing, security and identity solutions, autonomiccomputing, cloud computing, commodity computing, mobility and wirelesssolutions, open source, biometrics, grid computing, and/or meshcomputing.

In various embodiments, system 100 may enable secure document exchangesbetween a provider 105 and a verifier 107. Provider 105 may comprise auser, an individual, or a party that desires to share a document withverifier 107. Verifier 107 may comprise a user, an individual, or aparty that desires to receive the document from provider 105. Forexample, provider 105 may exchange documents having confidential orsensitive data with verifier 107 as part of a job application, amortgage application, a credit inquiry, a credit account (e.g., toestablish a credit card), and/or the like. The document may comprise acertified document. For example, the certified document may beauthenticated by a trusted party (e.g., a transaction account issuer, auniversity, a credit bureau, DMV, etc.), via a digital signature,appended certificate, or the like. The trusted party may host or beassociated with the trusted API provider 135, as discussed furtherherein. In various embodiments, system 100 may comprise one or more of aprovider system 110, a verifier system 120, a trusted storageenvironment 130, and/or a decentralized web host 150.

In various embodiments, provider 105 may access provider system 110 tointeract with system 100. Provider system 110 may be in electroniccommunication with trusted storage environment 130, decentralized webhost 150, and/or verifier system 120. Provider system 110 may beconfigured to enable provider 105 to transmit certified documentssecurely to verifier 107, via verifier system 120, as discussed furtherherein. In various embodiments, provider system 110 may comprise anysuitable hardware, software, and/or database components capable oftransmitting, receiving, parsing, and storing data. For example,provider system 110 may comprise a personal computer, personal digitalassistant, cellular phone, smartphone IPHONE®, BLACKBERRY®, etc.), IoTdevice, kiosk, and/or the like. Provider system 110 may comprise anoperating system, such as, for example, a WINDOWS® mobile operatingsystem, an ANDROID® operating system, APPLE® IOS®, a BLACKBERRY®operating system, a LINUX® operating system, and the like. Providersystem 110 may also comprise software components installed on providersystem 110 and configured to allow provider 105, via provider system 110access to various system 100 components. For example, provider system110 may comprise a web browser (e.g., MICROSOFT INTERNET EXPLORER®,GOGGLE CHROME®, etc.), an application, a micro-app or mobileapplication, or the like, configured to allow provider 105 to access andinteract with various system 100 components. In various embodiments,provider system 110 may be computer based, and may comprise a processor,a tangible non-transitory computer-readable memory, and/or a networkinterface, along with other suitable system software and hardwarecomponents. instructions stored on the tangible non-transitory memorymay allow provider system 110 to perform various functions, as describedherein.

In various embodiments, provider system 110 may comprise variouscomponents configured to aid provider system 110 with participating inthe secure document exchange process. For example, and with reference toFIG. 2A. provider system 110 may comprise one or more of a providersecure document exchange user interface (UI) 263, a provider sessionruntime services 265, and/or session cryptographic keys 261.

Provider secure document exchange UI 263 may comprise software, a mobileapplication, a web interface, or the like accessible from providersystem 110. For example, provider secure document exchange UI 263 mayinclude a graphical user interface (“GUI”), software modules, logicengines, various databases, interfaces to systems and took, and/orcomputer networks. For example, provider secure document exchange UI 263may provide a GUI configured to enable provider 105 to interact withvarious components in system 100, and transmit and receive data, asdiscussed further herein.

Provider session runtime services 265 may comprise software, a mobileapplication, database components, or the like accessible from providersystem 110. For example, provider session runtime services 265 maycomprise JAVASCRIPT® code and may be downloaded from decentralized webhost 150. For example, provider system 110, via provider secure documentexchange UI 263, may access decentralized web host 150 to request anddownload provider session runtime services 265, as discussed furtherherein. In various embodiments, provider session runtime services 265may be installed on provider system 110 and may be used for a pluralityof secure document exchange session. In various embodiments, providersession runtime services 265 may also be configured to be available fora single secure document exchange session. In various embodiments,provider session runtime services 265 may be configured to control theend-to-end workflow for secure document exchanges. For example, providersession runtime services 265 may provide one or more softwaredevelopment kits (Saks), application programming interfaces (APIs) orthe like, together with decentralized media services and protocols,cryptography libraries, and the like.

In that regard, provider session runtime services 265 may also beconfigured to generate and/or store cryptographic keys used in thesecure document exchange (e.g., session cryptographic keys). Forexample, provider session runtime services 265 may be configured togenerate session cryptographic keys 267. Session cryptographic keys 267may be generated using any suitable encryption algorithm, such as, forexample, an asymmetric encryption algorithm including RSA, EIGamal, DSA,elliptic-curve cryptography (e.g., ECC, ECDH, ECDSA, etc.), or the like.Session cryptographic keys 267 may be generated to comprise a sessionpublic key and a session private key pair. The session private key maycomprise a key timestamp created at generation of session cryptographickeys 267. The session private key may be configured to expire based on akey expiration duration relative to the key timestamp (e.g., 30 minutes,1 hour, 1 day, etc.). In that respect, and in accordance with variousembodiments, session cryptographic keys 267 may be configured for useduring a single secure document exchange session, and may expire withina specified duration, as discussed further herein. In variousembodiments, provider session runtime services 265 may also beconfigured to store session cryptographic keys 267 received fromverifier system 120 as part of the secure document exchange process. Forexample, and as discussed further herein, provider session runtimeservices 265 may be configured to store a session public key receivedfrom verifier system 120.

In various embodiments, provider system 110 may also be configured tostore and maintain provider cryptographic keys (e.g., a provider publickey and a provider private key pair) used to encrypt and decryptcertified documents stored in decentralized storage 140. The providercryptographic key pair may be generated using any suitable encryptionalgorithm, such as for example, any symmetric or asymmetric encryptionalgorithm discussed herein or known in the art.

In various embodiments, verifier 107 may access verifier system 120 tointeract with system 100, Verifier system 120 may be in electroniccommunication with trusted storage environment 130, decentralized webhost 150, and/or provider system 110, Verifier system 120 may beconfigured to enable verifier 107 to receive certified documentssecurely from provider 105, via provider system 110, as discussedfurther herein. In various embodiments, verifier system 120 may compriseany suitable hardware, software, and/or database components capable oftransmitting, receiving, parsing, and storing data. For example,verifier system 120 may comprise a personal computer, personal digitalassistant, cellular phone, smartphone (e.g., IPHONE®, BLACKBERRY®,etc.), IoT device, kiosk, and/or the like. Verifier system 120 maycomprise an operating system, such as, for example, a WINDOWS® mobileoperating system, an ANDROID® operating system, APPLE® IOS®, aBLACKBERRY® operating system, a LINUX® operating system, and the like.Verifier system 120 may also comprise software components installed onverifier system 120 and configured to allow verifier 107, via verifiersystem 120, access to various system 100 components. For example,verifier system 120 may comprise a web browser (e.g., MICROSOFT INTERNETEXPLORER®, GOGGLE CHROME®, etc.), an application, a micro-app or mobileapplication, or the like, configured to allow verifier 107 to access andinteract with various system 100 components. In various embodiments,verifier system 120 may be computer based, and may comprise a processor,a tangible non-transitory computer-readable memory, and/or a networkinterface, along with other suitable system software and hardwarecomponents. Instructions stored on the tangible non-transitory memorymay allow verifier system 120 to perform various functions, as describedherein.

In various embodiments, verifier system 120 may comprise variouscomponents configured to aid verifier system 120 with participating inthe secure document exchange process. For example, and with reference toFIG. 23, verifier system 120 may comprise one or more of a verifiersecure document exchange user interface (UI) 273, a verifier sessionruntime services 275, and/or session cryptographic keys 267.

Verifier secure document exchange UI 273 may be similar to providersecure document exchange UI 263. with brief reference to FIG. 2A.Verifier secure document exchange UI 273 may comprise software, a mobileapplication, a web interface, or the like accessible from verifiersystem 120. For example, verifier secure document exchange UI 273 mayinclude a graphical user interface (“GUI”), software modules, logicengines, various databases, interfaces to systems and tools, and/orcomputer networks. For example, verifier secure document exchange UI 273may provide a GUI configured to enable verifier 107 to interact withvarious components in system 100, and transmit and receive data, asdiscussed further herein.

Verifier session runtime services 275 may be similar to provider sessionruntime services 265, with brief reference to FIG. 2A. Verifier sessionruntime services 275 may comprise software, a mobile application,database components, or the like accessible from verifier system 120.For example, verifier session runtime services 275 may compriseJAVASCRIPT® code and may be downloaded from decentralized web host 150.For example, verifier system 120, via verifier secure document exchangeUI 273, may access decentralized web host 150 to request and downloadverifier session runtime services 275, as discussed further herein. Invarious embodiments, verifier session runtime services 275 may beinstalled on verifier system 120 and may be used for a plurality ofsecure document exchange session. In various embodiments, verifiersession runtime services 275 may also be configured to be available fora single secure document exchange session. In various embodiments,verifier session runtime services 275 may be configured to control theend-to-end workflow for secure document exchanges. For example, verifiersession runtime services 275 may provide one or more softwaredevelopment kits (SDKs), application programming interfaces (APIs) orthe like, together with decentralized media services and protocols,cryptography libraries, and the like.

In that regard, verifier session runtime, services 275 may also beconfigured to generate and/or store cryptographic keys used in thesecure document exchange (e.g., session cryptographic keys). Forexample, verifier session runtime services 275 may be configured togenerate session cryptographic keys 267. Session cryptographic keys 267may be generated using any suitable encryption algorithm, such as, forexample, an asymmetric encryption algorithm including RSA, EIGamal, DSA,elliptic-curve cryptography (e.g., ECC, ECDH, ECDSA, etc.), or the like.Session cryptographic keys 267 may be generated to comprise a sessionpublic key and a session private key pair. The session private key maycomprise a key timestamp created at generation of session cryptographickeys 267. The session private key may be configured to expire based on akey expiration duration relative to the key timestamp (e.g., 30 minutes,1 hour, 1 day, etc.). In that respect, and in accordance with variousembodiments, session cryptographic keys 267 may be configured for useduring a single secure document exchange session, and may expire withina specified duration, as discussed further herein. In variousembodiments, verifier session runtime services 275 may also beconfigured to store session cryptographic keys 267 received fromprovider system 110 as part of the secure document exchange process. Forexample, and as discussed further herein, verifier session runtimeservices 275 may be configured to store a session public key receivedfrom provider system 110.

In various embodiments, trusted storage environment 130 may comprise oneor more trusted API providers 135 and/or decentralized storages 140.Trusted storage environment 130 may be in electronic communication withprovider system 110, verifier system 120, and/or decentralized web host150. Each trusted API provider 135 and/or decentralized storage 140 maybe associated with one or more trusted entities. For example, a trustedentity may be the entity that issued the certified document beingexchanged in system 100 (e.g., a university issues transcripts). Thetrusted entity may also comprise an entity capable of authenticatingcertified documents, such as a bank, government entity, or the like.

In various embodiments, trusted API provider 135 may comprise software,services, database components, or the like configured to perform variousoperations discussed further herein. For example, trusted API provider135 may comprise a RESTful API that integrates with decentralizedstorage 140. In that respect, trusted API provider 135 may be configuredto write and retrieve data to decentralized storage 140, receive andtransmit session public keys, and the like, as discussed further herein.In various embodiments, trusted API provider 135 may be configured togenerate a session nonce. The session nonce may comprise one or morealphanumeric characters and may be generated to be unique to the securedocument exchange session (e.g., a cryptographic nonce comprisingvarious arbitrary alphanumeric characters, such as “c9La5”). The sessionnonce may be generated to comprise a nonce timestamp created atgeneration of the session nonce. The session nonce may also beconfigured to expire based on a nonce expiration duration relative tothe nonce timestamp (e.g., 30 minutes, 1 hour, 1 day, etc.). In thatrespect, and in accordance with various embodiments, the session noncemay be configured for use during a single secure document exchangesession, and may expire within a specified duration.

In that regard, trusted API provider 135 may be configured to receive,interact with, and write data that is non-sensitive. Trusted APIprovider 135 may be available on a trusted entity's system or platform,or any other suitable trusted third party, and accessible by providersystem 110 and/or verifier system 120.

In various embodiments, decentralized storage 140 may be configured tostore and maintain data, including encrypted certified documents,session keys, session nonces, and the like, as discussed further herein.Decentralized storage 140 may be configured to store and maintainnon-sensitive data and/or data that is encrypted using a providercryptographic key or session cryptographic keys 267. In variousembodiments, decentralized storage 140 may not be affiliated with anyentity in system 100, and may store and maintain the data usinganonymous devices hosting the decentralized media

Decentralized storage 140 may comprise any suitable decentralizedstorage medium capable of securely storing data. For example, and inaccordance with various embodiments, decentralized storage 140 may be anInterPlanetary File System (IPFS) comprising a file system capable ofstoring and sharing data across a distributed, peer-to-peer network. TheIPFS implementation may comprise a distributed hash table (DHT) thatstores data as key (document locator)/value pairs across thepeer-to-peer file system.

In various embodiments, decentralized storage 140 may use features andfunctionality of blockchain technology, including, for example,consensus based validation, immutability, and cryptographically chainedblocks of data. The blockchain may comprise a ledger of interconnectedblocks containing data. The blockchain may provide enhanced securitybecause each block may hold individual transactions and the results ofany blockchain executables. Each block may link to the previous blockand may include a timestamp. Blocks may be linked because each block mayinclude the hash of the prior block in the blockchain. The linked blocksform a chain, with only one successor block allowed to link to one otherpredecessor block for a single chain. Forks may be possible wheredivergent chains are established from a previously uniform blockchain,though typically only one of the divergent chains will be maintained asthe consensus chain. In various embodiments, the blockchain mayimplement smart contracts that enforce data workflows in a decentralizedmanner. In various embodiments, decentralized storage 140 may includeone or more nodes configured to maintain a copy (or partial copy) of theblockchain, write and/or retrieve data and blocks from the blockchain,validate blocks of the blockchain, and/or propagate writes to the blockchain to at least one other node. Each node may communicate with one ormore nodes to validate and write blocks to the blockchain, and toestablish consensus between the nodes. For example, the nodes mayestablish consensus based on proof of work, proof of stake, practicalbyzantine fault tolerance, delegated proof of stake, or other suitableconsensus algorithms. For more information on distributed ledgersimplementing features and functionalities of blockchain, see U.S.application Ser. No. 15/266,350 titled SYSTEMS AND METHODS FORBLOCKCHAIN BASED PAYMENT NETWORKS and filed on Sep. 15, 2016, U.S.application Ser. No. 15/682,180 titled SYSTEMS AND METHODS FOR DATA FILETRANSFER BALANCING AND CONTROL ON BLOCKCHAIN and filed Aug. 21, 2017,U.S. application Ser. No. 15/728,086 titled SYSTEMS AND METHODS FORLOYALTY POINT DISTRIBUTION and filed Oct. 9, 2017, U.S. application Ser.No. 15/785,843 titled MESSAGING BALANCING AND CONTROL ON BLOCKCHAIN andfiled on Oct. 17, 2017, U.S. application Ser. No. 15/785,870 titled APIREQUEST AND RESPONSE BALANCING AND CONTROL ON BLOCKCHAIN and filed onOct. 17, 2017, U.S. application Ser. No. 15/824,450 titled SINGLESIGN-ON SOLUTION USING BLOCKCHAIN and filed on Nov. 28, 2017, U.S.application Ser. No. 15/824,513 titled TRANSACTION AUTHORIZATION PROCESSUSING BLOCKCHAIN and filed on Nov. 28, 2017, U.S. application Ser. No.15/943,168 titled TRANSACTION PROCESS USING BLOCKCHAIN TOKEN SMARTCONTRACTS and filed on Apr. 2, 2018, and U.S. application Ser. No.15/943,271 titled FRAUD MANAGEMENT USING A DISTRIBUTED DATABASE andfiled on Apr. 2, 2018, the contents of which are each incorporated byreference in its entirety.

In various embodiments, decentralized web host 150 may comprise varioussoftware, services, database components, or the like. Decentralized webhost 150 may be in electronic communication with provider system 110,verifier system 120, and/or trusted storage environment 130. In variousembodiments, decentralized web host 150 may be associated withdecentralized storage 140, such as, for example, as a web host or webserver enabling access to various software, services, and the likeconfigured to enable communications with decentralized storage 140. Aweb address used to establish communication with decentralized web host150 may be public and well known. Decentralized web host 150 may beconfigured to store and maintain various session runtime services, suchas, for example provider session runtime services 265 and/or verifiersession runtime services 275, with brief references to FIGS. 2A and 2B.In that respect, provider 105, via provider system 110, and/or verifier107, via verifier system 120, may access decentralized web host 150 toaccess and download various runtime services, as discussed furtherherein.

As used herein, “transmit” may include sending at least a portion ofelectronic data from one system 100 component to another. Additionally,as used herein, “data,” “Information,” or the like may includeencompassing information such as commands, queries, files, messages,data for storage, and the like in digital or any other form.

As used herein, “electronic communication” may comprise a physicalcoupling and/or non-physical coupling capable of enabling system 100components to transmit and receive data. For example, “electroniccommunication” may refer to a wired or wireless protocol such as a CANbus protocol, an Ethernet physical layer protocol (e.g., those using10BASE-T, 100BASE-T, 1000BASE-T, etc.), an IEEE 1394 interface (e.g.,FireWire) Integrated Services for Digital Network (ISDN), a digitalsubscriber line (DSL), an 802.11a/b/g/n/ac signal (e.g., Wi-Fi), awireless communications protocol using short wavelength UHF radio wavesand defined at least in part by IEEE 802.15.1 (e.g., the BLUETOOTH®protocol maintained by Bluetooth Special Interest Group), a wirelesscommunications protocol defined at least in part by IEEE 802.15.4 (e.g.,the ZIGBEE® protocol maintained by the ZigBee alliance), a cellularprotocol, an infrared protocol, an optical protocol, or any otherprotocol capable of transmitting information via a wired or wirelessconnection.

One or more of the system 100 components may be in electroniccommunication via a network. As used herein, the term “network” mayfurther include any cloud, cloud computing system, or electroniccommunications system or method that incorporates hardware and/orsoftware components. Communication amongst the nodes may be accomplishedthrough any suitable communication channels, such as, for example, atelephone network, an extranet, an intranet. Internet, point ofinteraction device (personal digital assistant, cellular phone, kiosk,tablet, etc.), online communications, satellite communications, off-linecommunications, wireless communications, transponder communications,local area network (LAN), wide area network (WAN), virtual privatenetwork (VPN), networked or linked devices, keyboard, mouse and/or anysuitable communication or data input modality. Moreover, although thesystem is frequently described herein as being implemented with TCP/IPcommunications protocols, the system may also be implemented usingInternetwork Packet Exchange (IPX), APPLETALK® program, IP-6, NetBIOSOSI, any tunneling protocol (e.g. IPsec, SSH, etc.), or any number ofexisting or future protocols. If the network is in the nature of apublic network, such as the internet, it may be advantageous to presumethe network to be insecure and open to eavesdroppers. Specificinformation related to the protocols, standards, and applicationsoftware utilized in connection with the Internet is generally known tothose skilled in the art and, as such, need not be detailed herein.

“Cloud” or “Cloud computing” includes a model for enabling convenient,on-demand network access to a shared pool of configurable computingresources (e.g., networks, servers, storage, applications, and services)that can be rapidly provisioned and released with minimal managementeffort or service provider interaction. Cloud computing may includelocation-independent computing, whereby shared servers provideresources, software, and data to computers and other devices on demand.For more information regarding cloud computing, see the NIST's (NationalInstitute of Standards and Technology) definition of cloud computing,

The various system components may be independently, separately orcollectively suitably coupled to the network via data links whichincludes, for example, a connection to an Internet Service Provider(ISP) over the local loop as is typically used in connection withstandard modem communication, cable modem, DISH NETWORKS®, ISDN, DSL, orvarious wireless communication methods. It is noted that the network maybe implemented as other types of networks, such as an interactivetelevision (ITV) network. Moreover, the system contemplates the use,sale or distribution of any goods, services or information over anynetwork having similar functionality described herein.

A network may be unsecure. Thus, communication over the network mayutilize data encryption. Encryption may be performed by way of any ofthe techniques now available, in the art or which may becomeavailable—e.g., Twofish, RSA, El Gamal, Schorr signature, DSA, PGP, PM,GPG (GnuPG), HPE Format-Preserving Encryption (FPE), Voltage, TripleDES, Blowfish, AES, MD5, HMAC, IDEA, RC6, and symmetric and asymmetriccryptosystems. Network communications may also incorporate SHA seriescryptographic methods, elliptic-curve cryptography (e.g., ECC, ECDH,ECDSA, etc.), and/or other post-quantum cryptography algorithms underdevelopment.

For the sake of brevity, conventional data networking, applicationdevelopment, and other functional aspects of system 100 may not bedescribed in detail herein. Furthermore, the connecting lines shown inthe various figures contained herein are intended to represent exemplaryfunctional relationships and/or electronic communications between thevarious elements. It should be noted that many alternative or additionalfunctional relationships or electronic communications may be present ina practical system.

Referring now to FIGS. 3-5 the process flows and screenshots depictedare merely embodiments and are not intended to limit the scope of thedisclosure. For example, the steps recited in any of the method orprocess descriptions may be executed in any order and are not limited tothe order presented. It will be appreciated that the followingdescription makes appropriate references not only to the steps and userinterface elements depicted in FIGS. 3-5, but also to the various systemcomponents as described above with reference to FIGS. 1, 2A, and 2B. Itshould be understood at the outset that, although exemplary embodimentsare illustrated in the figures and described below, the principles ofthe present disclosure may be implemented using any number oftechniques, whether currently known or not. The present disclosureshould in no way be limited to the exemplary implementations andtechniques illustrated in the drawings and described below. Unlessotherwise specifically noted, articles depicted in the drawings are notnecessarily drawn to scale.

In various embodiments, and with specific reference to FIG. 3, a method301 for initializing a secure document exchange is disclosed. Method 301may enable provider 105 to securely transmit one or more certifieddocuments to verifier 107. Although method 301 describes provider 105,via provider system 110, initiating the initialization of the securedocument exchange, it should be understood that the steps of method 301may also be initiated and completed by verifier 107, via verifier system120.

In various embodiments, provider 105 accesses provider system 110 (e.g.,via provider secure document exchange UI 263) to initiate the securedocument exchange. Provider system 110 requests a secure documentexchange URL (step 302) from decentralized web host 150. In variousembodiments, the request may comprise a trusted API provider thatprovider 105 and/or verifier 107 desire to use for the documentexchange. For example, provider 105 may previously upload and storecertified documents using a specific trusted API provider 135. Invarious embodiments, the request may also not specify the trusted APIprovider 135 to be used, and decentralized web host 150 may beconfigured to select the trusted API provider 135 anonymously (e.g., viaa random selection process or the like). In response to receiving therequest, decentralized web host 150 may be configured to generate thesecure document exchange URL. The secure document exchange URL may linkto a network or server location from which provider 105 and verifier 107may access and download session runtime services, as discussed furtherherein. In that respect, the secure document exchange URL may be uniqueto each secure document exchange session. The secure document exchangeURL may comprise a full URL, a TinyURL, a shortened or compact URL, orthe like. Decentralized web host 150 may return the secure documentexchange URL to provider system 110.

In various embodiments, provider system 110 downloads provider sessionruntime services 265 (step 304) by accessing the secure documentexchange URL. Provider session runtime services 265 may be downloadedand installed on provider system 110 using any suitable technique andprocess.

Provider 105 communicates the secure document exchange URL to verifier107 (step 306). For example, provider 105 may communicate the securedocument exchange URL to verifier 107 in person or via a phone call. Asa further example, provider 105 may interact with provider system 110 totransmit the secure document exchange URL to verifier 107, such as, forexample, by text message (e.g., SMS, MMS, etc.), email, instantmessaging, push notification, or the like. In response to receiving thesecure document exchange URL, verifier system 120 downloads a verifiersession runtime services 275 (step 308) by accessing the secure documentexchange URL. Verifier session runtime services 275 may be downloadedand installed on verifier system 120 using any suitable technique andprocess.

In various embodiments, verifier session runtime services 275 generatessession cryptographic keys 267 (step 310). Session cryptographic keys267 may be generated using any suitable encryption algorithm, such as,for example, an asymmetric encryption algorithm including RSA EIGamal,DSA, elliptic-curve cryptography (e.g., ECC, ECDH, ECDSA, etc.), or thelike. Session cryptographic keys 267 may be generated to comprise asession public key and a session private key pair. The session privatekey may comprise a key timestamp created at generation of sessioncryptographic keys 267. The session private key may be configured toexpire based on a key expiration duration relative to the key timestamp(e.g., 30 minutes, 1 hour, 1 day, etc.). In that respect, and inaccordance with various embodiments, session cryptographic keys 267 maybe configured for use during a single secure document exchange session,and may expire within a specified duration. Verifier session runtimeservices 275 transmits the session public key to trusted API provider135 (step 312). Trusted API provider 135 may be the trusted API providerspecified by provider system 110, or anonymously selected bydecentralized web host 150, in step 302. In that respect, verifiersession runtime services 275 (and the corresponding provider sessionruntime services 265) may be instantiated to communicate only with thespecified or selected trusted API provider 135.

In response to receiving the session public key, trusted API provider135 generates a session nonce (step 314). The session nonce may compriseone or more alphanumeric characters and may be generated to be unique tothe secure document exchange session (e.g., a cryptographic noncecomprising various arbitrary alphanumeric characters, such as “c9La5”).The session nonce may be generated to comprise a nonce timestamp createdin response to generation of the session nonce. The session nonce mayalso be configured to expire based on a nonce expiration durationrelative to the nonce timestamp (e.g., 30 minutes, 1 hour, 1 day, etc.).In that respect, and in accordance with various embodiments, the sessionnonce may be configured for use during a single secure document exchangesession, and may expire within a specified duration. In variousembodiments, the nonce expiration duration may be the same as the keyexpiration duration for the session public key. In various embodiments,the nonce expiration duration may be shorter or longer than the keyexpiration duration. Trusted API provider 135 writes the session nonceand the session public key to decentralized storage 140 (step 316).Trusted API provider 135 may associate the session nonce and the sessionpublic key (e,g., using a unique session ID, or based on the sessionnonce) in response to writing the session nonce and the session publickey to decentralized storage 140.

In response to completing the write to decentralized storage 140,trusted API provider 135 returns the session nonce to verifier sessionruntime services 275 (step 318), Verifier session runtime services 275may return the session nonce to verifier system 120, and/or may displaythe session nonce to verifier 107 via verifier secure document exchangeUI 273. Verifier session runtime services 275 may also returnverification of a successful (or faded) write to decentralized storage140. Verifier 107 communicates the session nonce to provider 105 (step320). For example, verifier 107 may communicate the session nonce toprovider 105 in person or via a phone call. As a further example,verifier 107 may interact with verifier system 120 to transmit thesession nonce to provider 105, such as, for example, by text message(e.g., SMS, MMS, etc.), email, instant messaging, push notification, orthe like.

In response to receiving the session nonce, provider 105 and/or providersystem 110 may input or pass the session nonce to provider sessionruntime services 265, Provider session runtime services 265 invokestrusted API provider 135 (step 322) by passing the session nonce totrusted AP provider 135. In response to being invoked, trusted APIprovider 135 queries decentralized storage based on the session nonce,and retrieves the session public key associated with the stored sessionnonce. Trusted API provider 135 returns the session public key toprovider session runtime services 265 (step 324).

In various embodiments, and with specific reference to FIG. 4, a method401 for uploading a certified document during a secure document exchangeis disclosed. In response to receiving the session public key in step324 of method 302 (with brief reference to FIG. 3), provider 105 maydesire to select one or more certified documents to be securelyexchanged with verifier 107. In various embodiments, the certifieddocuments may be previously uploaded and stored in decentralized storage140. For example, wherein trusted API provider 135 comprises auniversity, certified documents relating to transcripts, degreeconferrals, or the like may be uploaded and maintained by trusted APIprovider 135 into decentralized storage 140. In that respect, thecertified documents may also be electronically signed or appended with adigital certificate comprising data indicating that the given digitalcertificate is authenticated from a trusted source (e.g., the trustedAPI provider 135).

In various embodiments, provider session runtime services 265 requests acertified document from trusted AR provider 135 (step 402). For example,provider session runtime services 265 may request the certified documentby selecting from an available document list (e.g., displayed viaprovider secure document exchange UI); by transmitting a document ID, adocument locator, or the Ike; and/or through any other suitable method.Based on the request, trusted AR provider 135 may be configured to querydecentralized storage 140 to retrieve the certified document. Inresponse to retrieving the certified document, trusted API provider 135returns the certified document to provider session runtime services 265(step 404).

In various embodiments, the certified document may be encrypted using aprovider public key. In response to receiving the certified document,provider system 110, via provider session runtime services 265, may beconfigured to decrypt the certified document using the provider privatekey associated with the provider public key, Provider session runtimeservices 265 encrypts the certified document using the session publickey (step 406) to generate a session encrypted certified document.Provider session runtime services 265 uploads the session encryptedcertified document to decentralized storage 140 (step 408). Providersession runtime services 265 may directly upload the session encryptedcertified document to decentralized storage 140, and may write the datausing any suitable technique.

Decentralized storage 140 returns a session document locator (step 410)to provider session runtime services 265 in response to storing thesession encrypted certified document. In various embodiments, thesession document locator may comprise an identifier (ID) or the likecorresponding to and associated with the session encrypted certifieddocument. In various embodiments, the session document may comprise ahash of the session encrypted certified document. The hash may begenerated using any suitable hashing algorithm. In that respect, thesession encrypted certified document may be retrieved by queryingdecentralized storage 140 based on the session document locator.

In response to receiving the session document locator, provider sessionruntime services 265 invokes trusted API provider 135 (step 412) bypassing the session nonce and the session document locator. In responseto being invoked, trusted AR provider 135 locally stores the sessionnonce and the session document locator (step 414). For example, trustedAPI provider 135 may store the session nonce and the session documentlocator in temporary local storage.

In various embodiments, and with specific reference to FIG. 5, a method501 for retrieving a certified document during a secure documentexchange is disclosed. Verifier session runtime services 275 pollstrusted API provider 135 (step 502) by passing the session nonce totrusted API provider 135. In various embodiments, verifier sessionruntime services 275 may be configured to poll trusted API provider 135in response to receiving the session nonce in step 318 of method 301,with brief reference to FIG. 3. Verifier session runtime services 275may be configured to poll trusted API provider 135 at any suitablepolling interval (e.g., 30 seconds, 1 minute, 5 minutes, etc.). In thatregard, verifier session runtime services 275 may be configured tocontinually poll trusted API provider 135 until the session encryptedcertified document has been uploaded to decentralized storage 140 (e.g.,step 408 of method 401, with brief reference to FIG. 4) and trusted APIprovider 135 has stored the session nonce and the session documentlocator (e.g., step 414 of method 401, with brief reference to FIG. 4).

In response to being polled by verifier session runtime services 275,trusted API provider may query its local storage to determine whetherthe session nonce exists. In various embodiments, trusted API provider135 locates the locally stored session nonce (step 504). In response tolocating the locally stored session nonce, trusted API provider 135 mayidentify the associated session document locator (e.g., as stored instep 414 of method 401, with brief reference to FIG. 4). In variousembodiments, trusted API provider 135 may also verify the timestamp ofthe session nonce to determine whether the session nonce has expired. Inresponse to determining that the session nonce has expired, trusted APIprovider 135 may transmit data back to verifier session runtime services275 indicating that the session has expired. In response to determiningthat the session nonce is valid, trusted API provider 135 retrieves thesession encrypted certified document from decentralized storage 140(step 506) based on the session document locator. For example, trustedAR provider 135 may query decentralized storage 140 based on the sessiondocument locator to locate and retrieve the session encrypted certifieddocument. Trusted API provider 135 transmits the session encryptedcertified document to verifier session runtime services 275 (step 508).

In various embodiments, verifier session runtime services 275 decryptsthe session encrypted certified document using the session private key(step 510). Verifier session runtime services 275 returns the decryptedcertified document to verifier system 120 (step 512). In variousembodiments, verifier 107 may access verifier system 120 and review thedecrypted certified document, such as, for example, via verifier securedocument exchange UI 273. In response to receiving and/or reviewing thedecrypted certified document, verifier 107 may communicate with provider105 that the certified document has been received.

Systems, methods, and computer program products are provided. In thedetailed description herein, references to “various embodiments,” “oneembodiment,” “an embodiment,” “an example embodiment,” etc., indicatethat the embodiment described may include a particular feature,structure, or characteristic, but every embodiment may not necessarilyinclude the particular feature, structure, or characteristic. Moreover,such phrases are not necessarily referring to the same embodiment.Further, when a particular feature, structure, or characteristic isdescribed in connection with an embodiment, it is submitted that it iswithin the knowledge of one skilled in the art to affect such feature,structure, or characteristic in connection with other embodimentswhether or not explicitly described. After reading the description, itwill be apparent to one skilled in the relevant art(s) how to implementthe disclosure in alternative embodiments.

As used herein, “satisfy,” “meet,” “match,” “associated with”, orsimilar phrases may include an identical match, a partial match, meetingcertain criteria, matching a subset of data, a correlation, satisfyingcertain criteria, a correspondence, an association, an algorithmicrelationship, and/or the like. Similarly, as used herein, “authenticate”or similar terms may include an exact authentication, a partialauthentication, authenticating a subset of data, a correspondence,satisfying certain criteria, an association, an algorithmicrelationship, and/or the like.

Terms and phrases similar to “associate” and/or “associating” mayinclude tagging, flagging, correlating, using a look-up table or anyother method or system for indicating or creating a relationship betweenelements, such as, for example, (i) a transaction account and (ii) anitem (e.g., offer, reward, discount, etc.) and/or digital channel.Moreover, the associating may occur at any point, in response to anysuitable action, event, or period of time. The associating may occur atpre-determined intervals, periodic, randomly, once, more than once, orin response to a suitable request or action. Any of the information maybe distributed and/or accessed via a software enabled link, wherein thelink may be sent via an email, text, post, social network input, and/orany other method known in the art.

In various embodiments, the methods described herein are implementedusing the various particular machines described herein. The methodsdescribed herein may be implemented using the below particular machines,and those hereinafter developed, in any suitable combination, as wouldbe appreciated immediately by one skilled in the art. Further, as isunambiguous from this disclosure, the methods described herein mayresult in various transformations of certain articles.

The various system components discussed herein may include one or moreof the following: a host server or other computing systems including aprocessor for processing digital data; a memory coupled to the processorfor storing digital data; an input digitizer coupled to the processorfor inputting digital data; an application program stored in the memoryand accessible by the processor for directing processing of digital databy the processor; a display device, coupled to the processor and memoryfor displaying information derived from digital data processed by theprocessor; and a plurality of databases. Various databases used hereinmay include: client data; merchant data; financial institution data;and/or like data useful in the operation of the system. As those skilledin the art will appreciate, user computer may include an operatingsystem (e.g., WINDOWS®, UNIX®, LINUX®, SOLARIS®, MACOS®, etc.) as wellas various conventional support software and drivers typicallyassociated with computers.

The present system, or any part(s) or function(s) thereof, may beimplemented using hardware, software, or a combination thereof and maybe implemented in one or more computer systems or other processingsystems. However, the manipulations performed by embodiments were oftenreferred to in terms, such as matching or selecting, which are commonlyassociated with mental operations performed by a human operator. No suchcapability of a human operator is necessary, or desirable in most cases,in any of the operations described herein. Rather, the operations may bemachine operations or any of the operations may be conducted or enhancedby artificial intelligence (AI) or machine learning. Artificialintelligence may refer generally to the study of agents (e.g., machines,computer-based systems, etc.) that perceive the world around them, formplans, and make decisions to achieve their goals. Foundations of AIinclude mathematics, logic, philosophy, probability, linguistics,neuroscience, and decision theory. Many fields fall under the umbrellaof AI, such as computer vision, robotics, machine learning, and naturallanguage processing. Useful machines for performing the variousembodiments include general purpose digital computers or similardevices.

In various embodiments, the embodiments are directed toward one or morecomputer systems capable of carrying out the functionalities describedherein. The computer system includes one or more processors. Theprocessor is connected to a communication infrastructure (e.g., acommunications bus, cross-over bar, network, etc.). Various softwareembodiments are described in terms of this exemplary computer system.After reading this description, a will become apparent to a personskilled in the relevant art(s) how to implement various embodimentsusing other computer systems and/or architectures. The computer systemcan include a display interface that forwards graphics, text, and otherdata from the communication infrastructure (or from a frame buffer notshown) for display on a display unit.

The computer system also includes a main memory, such as random accessmemory (RAM), and may also include a secondary memory. The secondarymemory may include, for example, a hard disk drive, a solid-state drive,and/or a removable storage drive. The removable storage drive reads fromand/or writes to a removable storage unit in a well-known manner. Aswill be appreciated, the removable storage unit includes a computerusable storage medium having stored therein computer software and/ordata.

In various embodiments, secondary memory may include other similardevices for allowing computer programs or other instructions to beloaded into a computer system. Such devices may include, for example, aremovable storage unit and an interface. Examples of such may include aprogram cartridge and cartridge interface (such as that found in videogame devices), a removable memory chip (such as an erasable programmableread only memory (EPROM), programmable read only memory (PROM)) andassociated socket, or other removable storage units and interfaces,which allow software and data to be transferred from the removablestorage unit to a computer system.

The terms “computer program medium,” “computer usable medium,” and“computer readable medium” are used to generally refer to media such asremovable storage drive and a hard disk installed in hard disk drive.These computer program products provide software to a computer system.

The computer system may also include a communications interface. Acommunications interface allows software and data to be transferredbetween the computer system and external devices. Examples ofcommunications interface may include a modem, a network interface (suchas an Ethernet card), a communications port, a Personal Computer MemoryCard international Association (PCMCIA) slot and card, etc. Software anddata transferred via the communications interface are in the form ofsignals which may be electronic, electromagnetic, optical, or othersignals capable of being received by communications interface. Thesesignals are provided to communications interface via a communicationspath (e.g., channel). This channel carries signals and may beimplemented using wire, cable, fiber optics, a telephone line, acellular link, a radio frequency (RF) link, wireless and othercommunications channels.

Any communication, transmission, communications channel, channel, and/orthe like discussed herein may include any system or method fordelivering content (e.g. data, information, metadata, etc.), and/or thecontent itself. The content may be presented in any form or medium, andin various embodiments, the content may be delivered electronicallyand/or capable of being presented electronically. For example, a channelmay comprise a website, mobile application, or device (e.g., FACEBOOK®.YOUTUBE®, PANDORA®, APPLE TV®, MICROSOFT® XBOX®, ROKU®, AMAZON FIRE®,GOOGLE CHROMECAST™, SON.Y.® PLAYSTATION®, NINTENDO® SWITCH®, etc.) auniform resource locator “URL”), a document (e.g., a MICROSOFT® Word™ orEXCEL®, an ADOBE® Portable Document Format (PDF) document, etc.), an“ebook” an “emagazine,” an application or microapplication (as describedherein), an SMS or other type of text message, an email, a FACEBOOK®message, a TWITTER® tweet, multimedia messaging services (MMS), and/orother type of communication technology. In various embodiments, achannel may be hosted or provided by a data partner. In variousembodiments, the distribution channel may comprise at least one of amerchant website, a social media website, affiliate or partner websites,an external vendor, a mobile device communication, social media network,and/or location based service. Distribution channels may include atleast one of a merchant website, a social media site, affiliate orpartner websites, an external vendor, and a mobile, device,communication. Examples of social media sites include FACEBOOK®,FOURSQUARE®, TWITTER®, LINKEDIN®, INSTAGRAM®, PiNTEREST®, TUMBLR®,REDDIT®, SNAPCHAT® WHATSAPP®, FLICKR®, VK®, OZONE®, WECHAT®, and thelike. Examples of affiliate or partner websites include AMERICANEXPRESS®, GROUPON®, LIVINGSOCIAL®, and the like. Moreover, examples ofmobile device communications include texting, email, and mobileapplications for smartphones.

Computer programs (also referred to as computer control logic) arestored in main memory and/or secondary memory. Computer programs mayalso be received via communications interface. Such computer programs,when executed, enable the computer system to perform the features asdiscussed herein. In particular, the computer programs, when executed,enable the processor to perform the features of various embodiments.Accordingly, such computer programs represent controllers of thecomputer system.

These computer program instructions may be loaded onto a general purposecomputer, special purpose computer, or other programmable dataprocessing apparatus to produce a machine, such that the instructionsthat execute on the computer or other programmable data processingapparatus create means for implementing the functions specified in theflowchart block or blocks. These computer program instructions may alsobe stored in a computer-readable memory that can direct a computer orother programmable data processing apparatus to function in a particularmanner, such that the instructions stored in the computer-readablememory produce an article of manufacture including instruction meanswhich implement the function specified in the flowchart block or blocks.The computer program instructions may also be loaded onto a computer orother programmable data processing apparatus to cause a series ofoperational steps to be performed on the computer or other programmableapparatus to produce a computer-implemented process such that theinstructions which execute on the computer or other programmableapparatus provide steps for implementing the functions specified in theflowchart block or blocks.

Accordingly, functional blocks of the block diagrams and flowchartillustrations support combinations of means for performing the specifiedfunctions, combinations of steps for performing the specified functions,and program instruction means for performing the specified functions. Rwill also be understood that each functional block of the block diagramsand flowchart illustrations, and combinations of functional blocks inthe block diagrams and flowchart illustrations, can be implemented byeither special purpose hardware-based computer systems which perform thespecified functions or steps, or suitable combinations of specialpurpose hardware and computer instructions. Further, illustrations ofthe process flows and the descriptions thereof may make reference touser WINDOWS® applications, webpages, websites, web forms, prompts, etc.Practitioners will appreciate that the illustrated steps describedherein may comprise in any number of configurations including the use ofWINDOWS® applications, webpages, web forms, popup WINDOWS® applications,prompts, and the like. It should be further appreciated that themultiple steps as illustrated and described may be combined into singlewebpages and/or WINDOWS® applications but have been expanded for thesake of simplicity. In other cases, steps illustrated and described assingle process steps may be separated into multiple webpages and/orWINDOWS® applications but have been combined for simplicity.

In various embodiments, software may be stored in a computer programproduct and loaded into a computer system using removable storage drive,hard disk drive, or communications interface. The control logic(software), when executed by the processor, causes the processor toperform the functions of various embodiments as described herein. Invarious embodiments, hardware components may take the form ofapplication specific integrated circuits (ASICs). Implementation of thehardware state machine so as to perform the functions described hereinwill be apparent to persons skilled in the relevant art(s).

In various embodiments, components, modules, and/or engines of system100 may be implemented as micro-applications or micro-apps. Micro-appsare typically deployed in the context of a mobile operating system,including for example, a WINDOWS® mobile operating system, an ANDROID.®operating system, an APPLE® iOS operating system, a BLACKBERRY®company's operating system, and the like. The micro-app may beconfigured to leverage the resources of the larger operating system andassociated hardware via a set of predetermined rules which govern theoperations of various operating systems and hardware resources. Forexample, where a micro-app desires to communicate with a device ornetwork other than the mobile device or mobile operating system, themicro-app may leverage the communication protocol of the operatingsystem and associated device hardware under the predetermined rules ofthe mobile operating system. Moreover, where the micro-app desires aninput from a user, the micro-app may be configured to request a responsefrom the operating system which monitors various hardware components andthen communicates a detected input from the hardware to the micro-app.

In various embodiments, the system may implement middleware to providesoftware applications and services, and/or to bridge software componentsin the computer based system, such as the operating system, database,applications, and the like. Middleware may include any hardware and/orsoftware suitably configured to facilitate communications and/or processtransactions between disparate computing systems. Middleware componentsare commercially available and known in the art. Middleware may beimplemented through commercially available hardware and/or software,through custom hardware and/or software components, or through acombination thereof. Middleware may reside in a variety ofconfigurations and may exist as a standalone system or may be a softwarecomponent residing on the internet server. Middleware may be configuredto process transactions between the various components of an applicationserver and any number of internal or external systems for any of thepurposes disclosed herein. WEBSPHERE® MQTM (formerly MQSeries) by IBM®,Inc. (Armonk, N.Y.) is an example of a commercially available middlewareproduct. An Enterprise Service Bus (“ESB”) application is anotherexample of middleware.

The systems, computers, computer based systems, and the like disclosedherein may provide a suitable website or other internet-based graphicaluser interface which is accessible by users. Practitioners willappreciate that there are a number of methods for displaying data withina browser-based document. Data may be represented as standard text orwithin a fixed list, scrollable list, drop-down list, editable textfield, fixed text field, pop-up window, and the like. Likewise, thereare a number of methods available for modifying data in a web page suchas, for example, free text entry using a keyboard, selection of menuitems, check boxes, option boxes, and the like.

Any of the communications, inputs, storage, databases or displaysdiscussed herein may be facilitated through a website having web pages.The term “web page” as it is used herein is not meant to limit the typeof documents and applications that might be used to interact with theuser. For example, a typical website might include, in addition tostandard HTML documents, various forms, JAVA® applets, JAVASCRIPT®programs, active server pages (ASP), common gateway interface scripts(CGI), extensible markup language (XML), dynamic HTML, cascading stylesheets (CSS), AJAX (Asynchronous JAVASCRIPT And XML) programs, helperapplications, plug-ins, and the like. A server may include a web servicethat receives a request from a web server, the request including a URLand an IP address (192.168.1.1). The web server retrieves theappropriate web pages and sends the data or applications for the webpages to the IP address. Web services are applications that are capableof interacting with other applications over a communications means, suchas the internet. Web services are typically based on standards orprotocols such as XML, SOAP, AJAX, WSDL and UDDI. Web services methodsare well known in the art, and are covered in many standard texts. As afurther example, representational state transfer (REST), or RESTful, webservices may provide one way of enabling interoperability betweenapplications.

In one embodiment, MICROSOFT® company's Internet Information Services(IIS), Transaction Server (MTS) service, and an SQL SERVER® database,are used in conjunction with MICROSOFT® operating systems, WINDOWS NT®web server software, SQL SERVER® database, and MICROSOFT® CommerceServer. Additionally, components such as ACCESS® software, SQL SERVER®database, ORACLE® software, SYBASE® software, INFORMIX® software, MYSQL®software, INTERBASE® software, etc., may be used to provide an ActiveData Object (ADO) compliant database management system. In oneembodiment, the APACHE® web server is used in conjunction with a LINUX®operating system, a MYSOL® database, and PERL®, PHP, Ruby, and/orPYTHON® programming languages.

In various embodiments, the server may include application servers (e.g.WEBSPHERE®. WEBLOGIC®, JBOSS®, POSTGRES PLUS ADVANCED SERVER®, etc.). Invarious embodiments, the server may include web servers (e.g. Apache,IIS, GOGGLE® Web Server, SUN JAVA® System Web Server, JAVA® VirtualMachine running on LINUX® or WINDOWS® operating systems).

Users, systems, computer based systems or the like may communicate withthe server via a web client. The web client includes any device orsoftware which communicates via any network, such as, for example anydevice or software discussed herein. The web client may include internetbrowsing software installed within a computing unit or system to conductonline transactions and/or communications. These computing units orsystems may take the form of a computer or set of computers, althoughother types of computing units or systems may be used, includingpersonal computers, laptops, notebooks, tablets, smart phones, cellularphones, personal digital assistants, servers, pooled servers, mainframecomputers, distributed computing clusters, kiosks, terminals, point ofsale (POS) devices or terminals, televisions, or any other devicecapable of receiving data over a network. The web client may include anoperating system (e.g., WINDOWS®, WINDOWS MOBILE® operating systems, UNIX® operating system, LINUX® operating systems, APPLE® OS® operatingsystems, etc.) as well as various conventional support software anddrivers typically associated with computers. The web-client may also runMICROSOFT® INTERNET EXPLORER® software, MOZILLA® FIREFOX® software,GOOGLE® CHROME® software, APPLE® SAFARI® software, or any other of themyriad software packages available for browsing the internet.

As those skilled in the art will appreciate, the web client may or maynot be in direct contact with the server (e.g., application server, webserver, etc., as discussed herein). For example, the web client mayaccess the services of the server through another server and/or hardwarecomponent, which may have a direct or indirect connection to an internetserver. For example, the web client may communicate with the server viaa load balancer. In various embodiments, web client access is through anetwork or the internet through a commercially-available web-browsersoftware package. In that regard, the web client may be in a home orbusiness environment with access to the network or the internet. The webclient may implement security protocols such as Secure Sockets Layer(SSL) and Transport Layer Security (TLS). A web client may implementseveral application layer protocols including HTTP, HTTPS, FTP, andSFTP.

Any databases discussed herein may include relational, hierarchical,graphical, blockchain, object-oriented structure, and/or any otherdatabase configurations. Any database may also include a flat filestructure wherein data may be stored in a single the in the form of rowsand columns, with no structure for indexing and no structuralrelationships between records. For example, a flat file structure mayinclude a delimited text file, a CSV (comma-separated values) the,and/or any other suitable flat file structure. Common database productsthat may be used to implement the databases include DB2® by IBM®(Armonk, N.Y.), various database products available from ORACLE®Corporation (Redwood Shores, Calif.), MICROSOFT ACCESS® or MICROSOFT SQLSERVER® by MICROSOFT®. Corporation (Redmond, Wash.), MYSQL® by MySQL AB(Uppsala, Sweden), MONGODB®, Redis, Apache Cassandra®, HBASE® byAPACHE®, MapR-DB by the MAPR® corporation, or any other suitabledatabase product. Moreover, any database may be organized in anysuitable manner, for example, as data tables or lookup tables. Eachrecord may be a single file, a series of files, a linked series of datafields, or any other data structure.

Association of certain data may be accomplished through any desired dataassociation technique such as those known or practiced in the art. Forexample, the association may be accomplished either manually orautomatically. Automatic association techniques may include, forexample, a database search, a database merge, GREP, AGREP, SQL, using akey field in the tables to speed searches, sequential searches throughall the tables and files, sorting records in the file according to aknown order to simplify lookup, and/or the like. The association stepmay be accomplished by a database merge function, for example, using a“key field” in pre-selected databases or data sectors. Various databasetuning steps are contemplated to optimize database performance. Forexample, frequently used files such as indexes may be placed on separatefile systems to reduce In/Out (“I/O”) bottlenecks.

More particularly, a key “field” partitions the database according tothe high-level class of objects defined by the key field. For example,certain types of data may be designated as a key field in a plurality ofrelated data tables and the data tables may then be linked on the basisof the type of data in the key field. The data corresponding to the keyfield in each of the linked data tables is preferably the same or of thesame type. However, data tables having similar, though not identical,data in the key fields may also be linked by using AGREE, for example.In accordance with one embodiment, any suitable data storage techniquemay be utilized to store data without a standard format. Data sets maybe stored using any suitable technique, including, for example, storingindividual files using an ISO/IEC 7816-4 file structure; implementing adomain whereby a dedicated file is selected that exposes one or moreelementary files containing one or more data sets; using data setsstored in individual files using a hierarchical filing system; data setsstored as records in a single file (including compression, SQLaccessible, hashed via one or more keys, numeric, alphabetical by firsttuple, etc.); data stored as Binary Large Object (BLOB); data stored asungrouped data elements encoded using ISO/IEC 7816-6 data elements; datastored as ungrouped data elements encoded using ISO/IEC Abstract SyntaxNotation (ASN.1) as in ISO/IEC 8824 and 8825; other proprietarytechniques that may include fractal compression methods, imagecompression methods, etc.

In various embodiments, the ability to store a wide variety ofinformation in different formats is facilitated by storing theinformation as a BLOB. Thus, any binary information can be stored in astorage space associated with a data set. As discussed above, the binaryinformation may be stored in association with the system or external tobut affiliated with system. The BLOB method may store data sets asungrouped data elements formatted as a block of binary via a fixedmemory offset using either fixed storage allocation, circular queuetechniques, or best practices with respect to memory management (e.g.,paged memory, least recently used, etc.). By using BLOB methods, theability to store various data sets that have different formatsfacilitates the storage of data, in the database or associated with thesystem, by multiple and unrelated owners of the data sets. For example,a first data set which may be stored may be provided by a first party, asecond data set which may be stored may be provided by an unrelatedsecond party, and yet a third data set which may be stored, may beprovided by an third party unrelated to the first and second party. Eachof these three exemplary data sets may contain different informationthat is stored using different data storage formats and/or techniques.Further, each data set may contain subsets of data that also may bedistinct from other subsets.

As stated above, in various embodiments, the data can be stored withoutregard to a common format. However, the data set (e.g., BLOB) may beannotated in a standard manner when provided for manipulating the datain the database or system. The annotation may comprise a short header,trailer, or other appropriate indicator related to each data set that isconfigured to convey information useful in managing the various datasets. For example, the annotation may be called a “condition header,”“header,” “trailer,” or “status,” herein, and may comprise an indicationof the status of the data set or may include an identifier correlated toa specific issuer or owner of the data. In one example, the first threebytes of each data set BLOB may be configured or configurable toindicate the status of that particular data set; e.g., LOADED,INITIALIZED, READY, BLOCKED, REMOVABLE, or DELETED. Subsequent bytes ofdata may be used to indicate for example, the identity of the issuer,user, transaction/membership account identifier or the like. Each ofthese condition annotations are further discussed herein.

The annotation may also be used for other types of status information aswell as various other purposes. For example, the data set annotation mayinclude security information establishing access levels. The accesslevels may, for example, be configured to permit only certainindividuals, levels of employees, companies, or other entities to accessdata sets, or to permit access to specific data sets based on thetransaction, merchant, issuer, user, or the like. Furthermore, thesecurity information may restrict/permit only certain actions such asaccessing, modifying, and/or deleting data sets. In one example, thedata set annotation indicates that only the data set owner or the userare permitted to delete a data set, various identified users may bepermitted to access the data set for reading, and others are altogetherexcluded from accessing the data set. However, other access restrictionparameters may also be used allowing various entities to access a dataset with various permission levels as appropriate.

The data, including the header or trader, may be received by astandalone interaction device configured to add, delete, modify, oraugment the data in accordance with the header or trailer. As such, inone embodiment, the header or trailer is not stored on the transactiondevice along with the associated issuer-owned data but instead theappropriate action may be taken by providing to the user at thestandalone device, the appropriate option for the action to be taken.The system may contemplate a data storage arrangement wherein the headeror trader, or header or trailer history, of the data is stored on thesystem, device or transaction instrument in relation to the appropriatedata.

One skilled in the art will also appreciate that, for security reasons,any databases, systems, devices, servers, or other components of thesystem may consist of any combination thereof at a single location or atmultiple locations, wherein each database, system, device, server,and/or other component includes any of various suitable securityfeatures, such as firewalls, access codes, encryption, decryption,compression, decompression, and/or the like.

Encryption may be performed by way of any of the techniques nowavailable in the art or which may become available—e.g., Twofish, RSA,El Carnal, Schorr signature, DSA, PGP, PM, GPG (GnuPG), HPEFormat-Preserving Encryption (FPE), Voltage, Triple DES, Blowfish, AES,MD5, HMAC, IDEA, RC6, and symmetric and asymmetric cryptosystems. Thesystems and methods may also incorporate SHA series cryptographicmethods, elliptic-curve cryptography (e.g., ECC ECDH, ECDSA, etc.),and/or other post-quantum cryptography algorithms under development.

A firewall may include any hardware and/or software suitably configuredto protect CMS components and/or enterprise computing resources fromusers of other networks. Further, the firewall may be configured tolimit or restrict access to various systems and components behind thefirewall for web clients connecting through a web server. The firewallmay reside in varying configurations including Stateful Inspection,Proxy based, access control lists, and Packet Filtering among others.The firewall may be integrated within a web server or any other CMScomponents or may further reside as a separate entity. The firewall mayimplement network address translation (“NAT”) and/or network addressport translation (“NAPE”). The firewall may accommodate varioustunneling protocols to facilitate secure communications, such as thoseused in virtual private networking. The firewall may implement ademilitarized zone (“DMZ”) to facilitate communications with a publicnetwork such as the internet. The firewall may be integrated as softwarewithin an internet server, any other application server components ormay reside within another computing device or may take the form of astandalone hardware component.

The system and method may be described herein in terms of functionalblock components, screen shots, optional selections, and variousprocessing steps. It should be appreciated that such functional blocksmay be realized by any number of hardware and/or software componentsconfigured to perform the specified functions. For example, the systemmay employ various integrated circuit components, e.g., memory elements,processing elements, logic elements, look-up tables, and the like, whichmay carry out a variety of functions under the control of one or moremicroprocessors or other control devices. Similarly, the softwareelements of the system may be implemented with any programming orscripting language such as C, C++, C#, JAVA®, JAVASCRIPT®, JAVASCRIPT®Object Notation (JSON), VBScript, Macromedia COLD FUSION, COBOL,MICROSOFT® company's Active Server Pages, assembly, PERL®, PHP, awk,PYTHON®, Visual Basic, SQL Stored Procedures, PL/SQL, any UNIX® shellscript, and extensible, markup language (XML) with the variousalgorithms being implemented with any combination of data structures,objects, processes, routines or other programming elements. Further, itshould be noted that the system may employ any number of conventionaltechniques for data transmission, signaling, data processing, networkcontrol, and the like. Still further, the system could be used to detector prevent security issues with a client-side scripting language, suchas JAVASCRIPT®, VB Script, or the like. Cryptography and networksecurity methods are well known in the art, and are covered in manystandard texts.

In various embodiments, the software elements of the system may also beimplemented using NODE.JS® components. NODE.JS® programs may implementseveral modules to handle various core functionalities. For example, apackage management module, such as NPM®, may be implemented as an opensource library to aid in organizing the installation and management ofthird-party NODE.JS® programs. NODE.JS® programs may also implement aprocess manager, such as, for example, Parallel Multithreaded Machine(“PM2”); a resource and performance monitoring tool, such as, forexample, Node Application Metrics (“appmetrics”); a library module forbuilding user interfaces, and/or any other suitable and/or desiredmodule.

As will be appreciated by one of ordinary skill in the art, the systemmay be embodied as a customization of an existing system, an add-onproduct, a processing apparatus executing upgraded software, astand-alone system, a distributed system, a method, a data processingsystem, a device for data processing, and/or a computer program product.Accordingly, any portion of the system or a module may take the form ofa processing apparatus executing code, an internet based embodiment, anentirely hardware embodiment, or an embodiment combining aspects of theinternet, software, and hardware. Furthermore, the system may take theform of a computer program product on a computer-readable storage mediumhaving computer-readable program code means embodied in the storagemedium. Any suitable computer-readable storage medium may be utilized,including hard disks, CD-ROM, SON.Y. BLU-RAY DISC®, optical storagedevices, magnetic storage devices, and/or the like.

The term “non-transitory” is to be understood to remove only propagatingtransitory signals per se from the claim scope and does not relinquishrights to all standard computer-readable media that are not onlypropagating transitory signals per se. Stated another way, the meaningof the term “non-transitory computer-readable medium” and“non-transitory computer-readable storage medium” should be construed toexclude only those types of transitory computer-readable media whichwere found in In re Nuijten to fall outside the scope of patentablesubject matter under 35 U.S.C. § 101.

Benefits, other advantages, and solutions to problems have beendescribed herein with regard to specific embodiments. However, thebenefits, advantages, solutions to problems, and any elements that maycause any benefit, advantage, or solution to occur or become morepronounced are not to be construed as critical, required, or essentialfeatures or elements of the disclosure. The scope of the disclosure isaccordingly limited by nothing other than the appended claims, in whichreference to an element in the singular is not intended to mean “one andonly one” unless explicitly so stated, but rather “one or more.”Moreover, where a phrase similar to ‘at least one of A, B, and C’ or ‘atleast one of A, B, or C’ is used in the claims or specification, it isintended that the phrase be interpreted to mean that A alone may bepresent in an embodiment, B alone may be present in an embodiment, Calone may be present in an embodiment, or that any combination of theelements A, B and C may be present in a single embodiment; for example,A and B, A and C, B and C, or A and B and C.

Although the disclosure includes a method, it is contemplated that itmay be embodied as computer program instructions on a tangiblecomputer-readable carrier, such as a magnetic or optical memory or amagnetic or optical disk. All structural, mechanical, electrical, andfunctional equivalents to the elements of the above-described variousembodiments that are known to those of ordinary skill in the art areexpressly incorporated herein by reference and are intended to beencompassed by the present claims. Moreover, it is not necessary for adevice or method to address each and every problem sought to be solvedby the present disclosure, for it to be encompassed by the presentclaims. Furthermore, no element, component, or method step in thepresent disclosure is intended to be dedicated to the public regardlessof whether the element, component, or method step is explicitly recitedin the claims. No claim element is intended to invoke 35 U.S.C. § 112(f)unless the element is expressly recited using the phrase “means for” or“step for”. As used herein, the terms “comprises,” “comprising,” or anyother variation thereof, are intended to cover a non-exclusiveinclusion, such that a process, method, article, or apparatus thatcomprises a list of elements does not include only those elements butmay include other elements not expressly listed or inherent to suchprocess, method, article, or apparatus.

Therefore, the following is claimed:
 1. A system, comprising a computingdevice comprising a processor and a memory; and machine-readableinstructions stored in the memory that, when executed by the processor,cause the computing device to at least: transmit a session public key toa Trusted Application Programming Interface (API) Provider; receive anencrypted session nonce from the Trusted API Provider, the encryptedsession nonce being encrypted with the session public key; transmit theencrypted session nonce to a provider system; receive an encrypteddocument and the encrypted session nonce from the provider system;decrypt the encrypted document and the encrypted session nonce using asession private key to generate a decrypted document and a decryptedsession nonce; and verify the decrypted document based at least in parton the decrypted session nonce.
 2. The system of claim 1 wherein thedecrypted session nonce comprises a timestamp and the machine-readableinstructions that cause the computing device to verify the decrypteddocumented based at least in part on the decrypted session nonce furthercause the computing device to determine whether the decrypted sessionnonce has expired based at least in part on the timestamp of thedecrypted session nonce.
 3. The system of claim 1, wherein the machinereadable instructions further cause the computing device to at leastsend to the provider system or the Trusted API Provider a messageindicating that the decrypted document has been verified.
 4. The systemof claim 1, wherein the machine readable instructions further cause thecomputing device to at least generate the session public key and thesession private key.
 5. The system of claim 4, wherein the machinereadable instructions further cause the computing device to associate atimestamp with the session private key, the time stamp indicating afuture expiration of the session private key.
 6. The system of claim 1,wherein the decrypted session nonce comprises an alphanumeric string ofcharacters.
 7. A method, comprising receiving, by a Trusted ApplicationProgramming Interface (API) Provider, an invocation from a providersystem; receiving, by the Trusted API Provider, a polling requestcomprising a session nonce from a verifier system; retrieving, by theTrusted API Provider, the session document locator based at least inpart on the session nonce in response to receiving the polling request;and storing, by the Trusted API Provider, the session document locatorassociated with the session nonce in response to the invocation by theprovider system.
 8. The method of claim 7, further comprisingretrieving, by the Trusted API Provider in response to retrieving thesession document locator, an encrypted certified document by sending aquery to a decentralized storage system, the query being based at leastin part on the session document locator.
 9. The method of claim 8,further comprising sending, by the Trusted API Provider, the encryptedcertified document to the verifier system.
 10. The method of claim 8,wherein the decentralized storage system comprises a blockchain.
 11. Themethod of claim 7, further comprising generating, by the Trusted APIProvider, the session nonce; receiving, from the verifier system by theTrusted API Provider, a session public key; and storing, by the TrustedAPI Provider, the session nonce and the session public key to adecentralized storage system.
 12. The method of claim 7, whereingenerating the session nonce further comprises adding, by the TrustedAPI Provider, a timestamp to the session nonce, the timestamp indicatingan expiration for the session nonce.
 13. The method of claim 7, whereinthe session nonce comprises an alphanumeric string of characters.
 14. Amethod, comprising. encrypting, by a provider system, a certifieddocument using a session public key to generate session encryptedcertified document; uploading, by the provider system, the sessionencrypted certified document to a decentralized storage system;receiving, by the provider system from the decentralized storage, asession document locator in response to uploading the session encryptedcertified document to the decentralized storage system; and invoking, bythe provider system, a Trusted Application Programming Interface (API)Provider by passing a session nonce and the session document locator tothe Trusted API Provider.
 15. The method of claim 14, furthercomprising: requesting, by the provider system, the certified documentfrom the Trusted API Provider; and receiving, by the provider system,the certified document from the Trusted API Provider.
 16. The method ofclaim 14, further comprising sending, by the provider system, theencrypted certified document and an encrypted version of session nonceto a verifier system.
 17. The method of claim 14, further comprisingreceiving, by the provider system, the session public key from averifier system.
 18. The method of claim 14, wherein the decentralizedstorage system comprises a blockchain.
 19. The method of claim 14,wherein the session nonce comprises a timestamp, the timestampindicating an expiration of the session nonce.
 20. The method of dam 14,wherein the session nonce comprises an alphanumeric string ofcharacters.